195        	struct udp_header *udphdr;  in udp_tx()  local
212 	udphdr = iob_push ( iobuf, sizeof ( *udphdr ) );  in udp_tx()
214 	udphdr->dest = dest->st_port;  in udp_tx()
215 	udphdr->src = src->st_port;  in udp_tx()
216 	udphdr->len = htons ( len );  in udp_tx()
217 	udphdr->chksum = 0;  in udp_tx()
218 	udphdr->chksum = tcpip_chksum ( udphdr, len );  in udp_tx()
222 	       ntohs ( udphdr->src ), ntohs ( udphdr->dest ),  in udp_tx()
223 	       ntohs ( udphdr->len ) );  in udp_tx()
227 			       &udphdr->chksum ) ) != 0 ) {  in udp_tx()
272 	struct udp_header *udphdr = iobuf->data;  in udp_rx()  local
280 	if ( iob_len ( iobuf ) < sizeof ( *udphdr ) ) {  in udp_rx()
282 		      iob_len ( iobuf ), sizeof ( *udphdr ) );  in udp_rx()
287 	ulen = ntohs ( udphdr->len );  in udp_rx()
288 	if ( ulen < sizeof ( *udphdr ) ) {  in udp_rx()
290 		      "(header is %zd bytes)\n", ulen, sizeof ( *udphdr ) );  in udp_rx()
300 	if ( udphdr->chksum ) {  in udp_rx()
311 	st_src->st_port = udphdr->src;  in udp_rx()
312 	st_dest->st_port = udphdr->dest;  in udp_rx()
315 	iob_pull ( iobuf, sizeof ( *udphdr ) );  in udp_rx()
319 	       ntohs ( udphdr->dest ), ntohs ( udphdr->src ), ulen );  in udp_rx()
324 		      ntohs ( udphdr->dest ) );  in udp_rx()